Add util.inspect to serializer benchmark

Author: caiogondim

benchmark/combination.js

@@ -61,6 +61,7 @@ caches.push(require('./cache/lru-cache'))
 const serializers = []
 serializers.push(require('./serializer/json-stringify'))
 serializers.push(require('./serializer/json-stringify-binded'))
+serializers.push(require('./serializer/util-inspect'))
 
 const strategies = []
 strategies.push(require('./strategy/naive'))

benchmark/serializer/index.js

@@ -57,6 +57,7 @@ caches.push(require('../cache/object'))
 const serializers = []
 serializers.push(require('./json-stringify'))
 serializers.push(require('./json-stringify-binded'))
+serializers.push(require('./util-inspect'))
 
 const strategies = []
 strategies.push(require('../strategy/partial-application'))

benchmark/serializer/util-inspect.js

@@ -0,0 +1,2 @@
+module.exports = require('util').inspect
+module.exports.label = 'util-inspect'